Re: Hello, has anyone succ on using cryptopp with latest c++ builder
One Sini <[email protected]> Tue, 9 Sep 2025 11:07:17 +0200
| Newsgroups | gmane.comp.encryption.cryptopp |
|---|---|
| Message-ID | <CAJm61-BfZB2Ji53iH+DJqs-cR5hAyJDzUxrdw2Qc0iVwaf8tPQ@mail.gmail.com> |
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Typical causes (especially with C++ Builder + Crypto++)
*ABI / Memory allocator incompatibility*
-
Crypto++ is primarily tested with Visual C++ and GCC, but less so with
Embarcadero.
-
SecByteBlock internally uses AlignedAllocate/AlignedDeallocate, which
can behave differently depending on compiler conventions for memory
alignment and operator new/delete.
-
If you link Crypto++ as a static lib that was built with a different
runtime (RTL) or allocator settings than your project, you=E2=80=99ll of=
ten
get *access
violations*.
*Runtime library mismatch*
-
Check that both Crypto++ and your application are built against the *sam=
e
C++ runtime library* (e.g. =E2=80=9CMulti-threaded DLL=E2=80=9D vs =E2=
=80=9CMulti-threaded
static=E2=80=9D).
-
If not: crashes are guaranteed.
*Name mangling / exception handling differences*
-
Embarcadero uses its own C++ ABI. If Crypto++ was compiled with an
incompatible ABI (for example clang or mingw, then linked into Builder),=
it
will break.
-
You must ensure it=E2=80=99s built with the *same compiler and the same =
flags*.
*Memory alignment issues*
-
SecByteBlock often requests 16-byte aligned memory (for SSE/AVX). If the
compiler doesn=E2=80=99t handle that correctly, you=E2=80=99ll see acces=
s violations.
-
Some Builder versions have known issues with alignment.
------------------------------
Possible solutions
-
*Embed Crypto++ directly into your project*
Instead of linking as a static library, add the Crypto++ source files
(*.cpp) directly into your C++ Builder project. That way it shares the s=
ame
runtime, allocator, and ABI =E2=86=92 many problems go away.
-
*Check RTTI and exceptions*
C++ Builder sometimes uses different exception mechanisms. Make sure
RTTI and exceptions are consistently enabled.
-
*Align build settings*
-
Same runtime library (e.g. Multi-threaded Debug DLL or the static
variant)
-
Same compiler options for memory/alignment
-
*Alternative: build Crypto++ as a DLL*
If static linking keeps failing, build Crypto++ as a DLL, export only
the API you need, and use it that way. This reduces ABI coupling.
Have nice day
William Schwank <[email protected]> schrieb am Di. 9. Sept. 2025 um 01:53:
> Hello, everyone, I'm a c++ builder user, and tring to use cryptopp with
> c++ builder.
>
> With the lastest version c++ builder, I succ compile and build cryptopp t=
o
> static lib.
>
> However, during using, especially when calling anything invove SecByteBlo=
ck,
> the application will just got exited, with errors like Access violation
> at address 00E87383 in module xxX.
>
> Does any has a clue and succ use this lib with c++ builder? I know this
> tool has only a very small group of users.
>
> --
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> https://groups.google.com/d/msgid/cryptopp-users/dda6224f-5905-43b4-b93c-=
da3878027471n%40googlegroups.com
> <https://groups.google.com/d/msgid/cryptopp-users/dda6224f-5905-43b4-b93c=
-da3878027471n%40googlegroups.com?utm_medium=3Demail&utm_source=3Dfooter>
> .
>
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<div><h3 style=3D"color:rgb(0,0,0);font-style:normal;letter-spacing:normal;=
text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;tex=
t-decoration:none">Typical causes (especially with C++ Builder + Crypto++)<=
/h3><p style=3D"color:rgb(0,0,0);font-style:normal;font-weight:400;letter-s=
pacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-s=
pacing:0px;text-decoration:none"><strong>ABI / Memory allocator incompatibi=
lity</strong></p><ul style=3D"color:rgb(0,0,0);font-style:normal;font-weigh=
t:400;letter-spacing:normal;text-indent:0px;text-transform:none;white-space=
:normal;word-spacing:0px;text-decoration:none"><li><p>Crypto++ is primarily=
tested with Visual C++ and GCC, but less so with Embarcadero.</p></li><li>=
<p><code>SecByteBlock</code>=C2=A0internally uses=C2=A0<code>AlignedAllocat=
e</code>/<code>AlignedDeallocate</code>, which can behave differently depen=
ding on compiler conventions for memory alignment and=C2=A0<code>operator n=
ew/delete</code>.</p></li><li><p>If you link Crypto++ as a static lib that =
was built with a different runtime (RTL) or allocator settings than your pr=
oject, you=E2=80=99ll often get=C2=A0<strong>access violations</strong>.</p=
></li></ul><p style=3D"color:rgb(0,0,0);font-style:normal;font-weight:400;l=
etter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal=
;word-spacing:0px;text-decoration:none"><strong>Runtime library mismatch</s=
trong></p><ul style=3D"color:rgb(0,0,0);font-style:normal;font-weight:400;l=
etter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal=
;word-spacing:0px;text-decoration:none"><li><p>Check that both Crypto++ and=
your application are built against the=C2=A0<strong>same C++ runtime libra=
ry</strong>=C2=A0(e.g. =E2=80=9CMulti-threaded DLL=E2=80=9D vs =E2=80=9CMul=
ti-threaded static=E2=80=9D).</p></li><li><p>If not: crashes are guaranteed=
.</p></li></ul><p style=3D"color:rgb(0,0,0);font-style:normal;font-weight:4=
00;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:no=
rmal;word-spacing:0px;text-decoration:none"><strong>Name mangling / excepti=
on handling differences</strong></p><ul style=3D"color:rgb(0,0,0);font-styl=
e:normal;font-weight:400;letter-spacing:normal;text-indent:0px;text-transfo=
rm:none;white-space:normal;word-spacing:0px;text-decoration:none"><li><p>Em=
barcadero uses its own C++ ABI. If Crypto++ was compiled with an incompatib=
le ABI (for example clang or mingw, then linked into Builder), it will brea=
k.</p></li><li><p>You must ensure it=E2=80=99s built with the=C2=A0<strong>=
same compiler and the same flags</strong>.</p></li></ul><p style=3D"color:r=
gb(0,0,0);font-style:normal;font-weight:400;letter-spacing:normal;text-inde=
nt:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decorat=
ion:none"><strong>Memory alignment issues</strong></p><ul style=3D"color:rg=
b(0,0,0);font-style:normal;font-weight:400;letter-spacing:normal;text-inden=
t:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decorati=
on:none"><li><p><code>SecByteBlock</code>=C2=A0often requests 16-byte align=
ed memory (for SSE/AVX). If the compiler doesn=E2=80=99t handle that correc=
tly, you=E2=80=99ll see access violations.</p></li><li><p>Some Builder vers=
ions have known issues with alignment.</p></li></ul><hr style=3D"font-style=
:normal;font-weight:400;letter-spacing:normal;text-indent:0px;text-transfor=
m:none;white-space:normal;word-spacing:0px;text-decoration:none"><h3 style=
=3D"color:rgb(0,0,0);font-style:normal;letter-spacing:normal;text-indent:0p=
x;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:n=
one">Possible solutions</h3><ul style=3D"color:rgb(0,0,0);font-style:normal=
;font-weight:400;letter-spacing:normal;text-indent:0px;text-transform:none;=
white-space:normal;word-spacing:0px;text-decoration:none"><li><p><strong>Em=
bed Crypto++ directly into your project</strong><br>Instead of linking as a=
static library, add the Crypto++ source files (*.cpp) directly into your C=
++ Builder project. That way it shares the same runtime, allocator, and ABI=
=E2=86=92 many problems go away.</p></li><li><p><strong>Check RTTI and exc=
eptions</strong><br>C++ Builder sometimes uses different exception mechanis=
ms. Make sure RTTI and exceptions are consistently enabled.</p></li><li><p>=
<strong>Align build settings</strong></p><ul><li><p>Same runtime library (e=
.g. Multi-threaded Debug DLL or the static variant)</p></li><li><p>Same com=
piler options for memory/alignment</p></li></ul></li><li><p><strong>Alterna=
tive: build Crypto++ as a DLL</strong><br>If static linking keeps failing, =
build Crypto++ as a DLL, export only the API you need, and use it that way.=
This reduces ABI coupling.</p></li></ul></div><div dir=3D"auto">Have nice =
day=C2=A0</div><div><br><div class=3D"gmail_quote gmail_quote_container"><d=
iv dir=3D"ltr" class=3D"gmail_attr">William Schwank <<a href=3D"mailto:s=
[email protected]">[email protected]</a>> schrieb am Di. 9. Sept. 2025 =
um 01:53:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 =
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hello, everyone, I'm =
a c++ builder user, and tring to use cryptopp with c++ builder.<div><br></d=
iv><div>With the lastest version c++ builder, I succ compile and build cryp=
topp to static lib.</div><div><br></div><div>However, during using, especia=
lly when calling anything invove=C2=A0<span style=3D"background-color:rgba(=
0,0,0,0);white-space:pre-wrap;color:rgb(31,35,40);font-family:"Monaspa=
ce Neon",ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consola=
s,"Liberation Mono",monospace;font-size:11.9px">SecByteBlock, </s=
pan>the application will just got exited, with errors like=C2=A0<span style=
=3D"color:rgb(31,35,40);font-family:-apple-system,BlinkMacSystemFont,"=
Segoe UI","Noto Sans",Helvetica,Arial,sans-serif,"Apple=
Color Emoji","Segoe UI Emoji"">=C2=A0</span><span style=3D"=
color:rgb(31,35,40);font-family:-apple-system,BlinkMacSystemFont,"Sego=
e UI","Noto Sans",Helvetica,Arial,sans-serif,"Apple Col=
or Emoji","Segoe UI Emoji"">Access violation at address 00E8=
7383 in module xxX.</span></div><div><span style=3D"color:rgb(31,35,40);fon=
t-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto S=
ans",Helvetica,Arial,sans-serif,"Apple Color Emoji","Se=
goe UI Emoji""><br></span></div><div><span style=3D"color:rgb(31,35,40=
);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","N=
oto Sans",Helvetica,Arial,sans-serif,"Apple Color Emoji",&qu=
ot;Segoe UI Emoji"">Does any has a clue and succ use this lib with c++=
builder? I know this tool has only a very small group of users.</span></di=
v>
<p></p>
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oglegroups.com</a>.<br>
</blockquote></div></div>
<p></p>
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